webpack/lib/ModuleTemplate.js

Packs CommonJs/AMD modules for the browser. Allows to split your codebase into multiple bundles, which can be loaded on demand. Support loaders to preprocess files, i.e. json, jsx, es7, css, less, ... and your custom stuff.

/*
	MIT License http://www.opensource.org/licenses/mit-license.php
	Author Tobias Koppers @sokra
*/
"use strict";

const { Tapable, SyncWaterfallHook, SyncHook } = require("tapable");

/** @typedef {import("webpack-sources").Source} Source */
/** @typedef {import("./Module")} Module */

module.exports = class ModuleTemplate extends Tapable {
	constructor(runtimeTemplate, type) {
		super();
		this.runtimeTemplate = runtimeTemplate;
		this.type = type;
		this.hooks = {
			content: new SyncWaterfallHook([
				"source",
				"module",
				"options",
				"dependencyTemplates"
			]),
			module: new SyncWaterfallHook([
				"source",
				"module",
				"options",
				"dependencyTemplates"
			]),
			render: new SyncWaterfallHook([
				"source",
				"module",
				"options",
				"dependencyTemplates"
			]),
			package: new SyncWaterfallHook([
				"source",
				"module",
				"options",
				"dependencyTemplates"
			]),
			hash: new SyncHook(["hash"])
		};
	}

	/**
	 * @param {Module} module the module
	 * @param {TODO} dependencyTemplates templates for dependencies
	 * @param {TODO} options render options
	 * @returns {Source} the source
	 */
	render(module, dependencyTemplates, options) {
		try {
			const moduleSource = module.source(
				dependencyTemplates,
				this.runtimeTemplate,
				this.type
			);
			const moduleSourcePostContent = this.hooks.content.call(
				moduleSource,
				module,
				options,
				dependencyTemplates
			);
			const moduleSourcePostModule = this.hooks.module.call(
				moduleSourcePostContent,
				module,
				options,
				dependencyTemplates
			);
			const moduleSourcePostRender = this.hooks.render.call(
				moduleSourcePostModule,
				module,
				options,
				dependencyTemplates
			);
			return this.hooks.package.call(
				moduleSourcePostRender,
				module,
				options,
				dependencyTemplates
			);
		} catch (e) {
			e.message = `${module.identifier()}\n${e.message}`;
			throw e;
		}
	}

	updateHash(hash) {
		hash.update("1");
		this.hooks.hash.call(hash);
	}
};